Kubernetes: Deploy Your First App in Kubernetes in 1 Hour

Learn how a pod serves as the basic Kubernetes unit, wrapping one or more containers and managing them, with built-in failover to other machines when issues arise.

Learn how replica sets address the single-pod limitation for production systems by ensuring a defined number of pods run and auto-recover on failures, with deployments preferred over standalone replicas.

Learn how deployments automate updating your app and rolling back to older versions with zero downtime, eliminating manual replica set steps for seamless version management.

Learn why containers fix dependency issues by packaging an app with its dependencies into a self-contained container. Discover how Docker creates images from Dockerfiles and runs containers.

Create a Docker image from a Dockerfile to run your app in a local container, including setting up a Docker Hub account, logging in, and building and tagging the image.

Push your Docker image to Docker Hub by tagging the local image, pushing to a repository, and verifying on Docker Hub to enable remote access.

Learn to write and run a Kubernetes pod from a yaml definition, including api version, metadata, labels, name, and image, and track the container as it starts.

Configure a Kubernetes service to expose your app, using a node port to forward external requests to the running container.

Discover the drawbacks of running a pod by itself and how a replica set automates recovery, illustrating why running a pod alone is not recommended.

Deploy a replicaset to automatically maintain the desired number of pods and replace crashed ones, using api version app/v1, with a selector and a pod template.

The drawback of a replica set is downtime during updates, because updating the image can kill the current pod and interrupt the service. Deployment avoids this issue.

Deployments enable zero-downtime rollouts by updating apps with a min ready seconds setting before switching versions. They wrap a replica set and automate rolling updates.

Perform a rolling update in a Kubernetes deployment to upgrade a game with zero downtime using a new image version, with an easy rollback.

Explore Kubernetes resources—services, replica sets, and deployments—and learn the advantages of replica sets and deployments, build a Docker image from a Dockerfile and push it to a remote registry.